1. School of Electrical, Electronic and Control Engineering, Changwon National University, 20 Changwondaehak-ro, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, South Korea
2. Division of Smart Electrical and Electronic Engineering, Silla University, 140 Baegyang-daero, 700beon-gil, Sasang-gu, Busan 46958, South Korea